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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
19/01/2017 |
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Data da última atualização: |
31/01/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MALEGORI, C.; GRASSI, S.; MARQUES, E. J. N.; FREITAS, S. T. de; CASIRAGHI, E. |
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Afiliação: |
CRISTINA MALEGORI, DeFENS Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, Milano, Italy; SILVIA GRASSI, DeFENS Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, Milano, Italy; EMANUEL JOSÉ NASCIMENTO MARQUES, UFPE; SERGIO TONETTO DE FREITAS, CPATSA; ERNESTINA CASIRAGHI, DeFENS Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, Milano, Italy. |
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Título: |
Vitamin C distribution in acerola fruit by near infrared hyperspectral imaging. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Spectral Imaging, v. 5/6, p. 1-4, dec. 2016. |
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Idioma: |
Francês |
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Conteúdo: |
The study aims at developing a methodology for qualitative mapping of nutraceutical compounds in fruit by near infrared hyperspectral imaging (NIR-HSI), focusing on vitamin C mapping in acerola (Malpighia emarginata D.C.), a Brazilian super-fruit characterised by its high content of ascorbic acid. Despite the fact that the spectral approach has often been applied to agricultural crops, research on acerola is very limited. So far, it is known that ascorbic acid decreases in acerola during ripening, but there is no information about its distribution in the fruit from green to red ripe maturity stages. Towards this aim, hyperspectral images of ten sliced acerola, picked at three maturity stages, were acquired using a SisuChema NIR-HSI system. On the pre-processed images, combined in a omprehensive matrix, principal component analysis was computed to select relevant components for classical least square (CLS) regression. CLS allowed distribution maps of ascorbic acid to be obtained (non-negativity, LOF = 1.9%), using, as reference spectra, acerola juices enriched with 0% and 5% of vitamin C powder. The pixels correlated with 5%-enriched juice showed a reduction from 29% to 6.5% according to colour changes, confirming a vitamin C decrease along the ripening stages. These results demonstrated the reliability of NIR-HSI for the evaluation of vitamin C distribution inside the different acerola areas. The presented approach presents the basis for qualitative mapping of nutraceutical compounds in fruits. MenosThe study aims at developing a methodology for qualitative mapping of nutraceutical compounds in fruit by near infrared hyperspectral imaging (NIR-HSI), focusing on vitamin C mapping in acerola (Malpighia emarginata D.C.), a Brazilian super-fruit characterised by its high content of ascorbic acid. Despite the fact that the spectral approach has often been applied to agricultural crops, research on acerola is very limited. So far, it is known that ascorbic acid decreases in acerola during ripening, but there is no information about its distribution in the fruit from green to red ripe maturity stages. Towards this aim, hyperspectral images of ten sliced acerola, picked at three maturity stages, were acquired using a SisuChema NIR-HSI system. On the pre-processed images, combined in a omprehensive matrix, principal component analysis was computed to select relevant components for classical least square (CLS) regression. CLS allowed distribution maps of ascorbic acid to be obtained (non-negativity, LOF = 1.9%), using, as reference spectra, acerola juices enriched with 0% and 5% of vitamin C powder. The pixels correlated with 5%-enriched juice showed a reduction from 29% to 6.5% according to colour changes, confirming a vitamin C decrease along the ripening stages. These results demonstrated the reliability of NIR-HSI for the evaluation of vitamin C distribution inside the different acerola areas. The presented approach presents the basis for qualitative mapping of nutraceutical ... Mostrar Tudo |
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Palavras-Chave: |
Classical least square; Hiperespectral do infravermelho; Imagem hiperspectral no infravermelho próximo (NIR-HSI); Near infrared hyperspectral imaging; Quadrante mínimo clássico (CLS). |
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Thesagro: |
Acerola; Vitamina C. |
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Thesaurus Nal: |
Malpighia emarginata. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/153556/1/Sergio-2016.pdf
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Marc: |
LEADER 02374naa a2200265 a 4500
001 2061202
005 2017-01-31
008 2016 bl uuuu u00u1 u #d
100 1 $aMALEGORI, C.
245 $aVitamin C distribution in acerola fruit by near infrared hyperspectral imaging.$h[electronic resource]
260 $c2016
520 $aThe study aims at developing a methodology for qualitative mapping of nutraceutical compounds in fruit by near infrared hyperspectral imaging (NIR-HSI), focusing on vitamin C mapping in acerola (Malpighia emarginata D.C.), a Brazilian super-fruit characterised by its high content of ascorbic acid. Despite the fact that the spectral approach has often been applied to agricultural crops, research on acerola is very limited. So far, it is known that ascorbic acid decreases in acerola during ripening, but there is no information about its distribution in the fruit from green to red ripe maturity stages. Towards this aim, hyperspectral images of ten sliced acerola, picked at three maturity stages, were acquired using a SisuChema NIR-HSI system. On the pre-processed images, combined in a omprehensive matrix, principal component analysis was computed to select relevant components for classical least square (CLS) regression. CLS allowed distribution maps of ascorbic acid to be obtained (non-negativity, LOF = 1.9%), using, as reference spectra, acerola juices enriched with 0% and 5% of vitamin C powder. The pixels correlated with 5%-enriched juice showed a reduction from 29% to 6.5% according to colour changes, confirming a vitamin C decrease along the ripening stages. These results demonstrated the reliability of NIR-HSI for the evaluation of vitamin C distribution inside the different acerola areas. The presented approach presents the basis for qualitative mapping of nutraceutical compounds in fruits.
650 $aMalpighia emarginata
650 $aAcerola
650 $aVitamina C
653 $aClassical least square
653 $aHiperespectral do infravermelho
653 $aImagem hiperspectral no infravermelho próximo (NIR-HSI)
653 $aNear infrared hyperspectral imaging
653 $aQuadrante mínimo clássico (CLS)
700 1 $aGRASSI, S.
700 1 $aMARQUES, E. J. N.
700 1 $aFREITAS, S. T. de
700 1 $aCASIRAGHI, E.
773 $tJournal of Spectral Imaging$gv. 5/6, p. 1-4, dec. 2016.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
19/02/2014 |
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Data da última atualização: |
13/04/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
LOPES, F. B.; SILVA, M. C. da; MIYAGI, E. S.; FIORAVANTI, M. C. S.; FACO, O.; McMANUS, C. |
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Afiliação: |
Fernando Brito Lopes, Pós-graduação - Universidade Federal de Goiás (UFG) - Goiânia, Goiás, Brazil; Marcelo Corrêa da Silva, Pós-graduação - UFG - Goiânia, Goiás, Brazil; Eliane Sayuri Miyagi, Pós-graduação - UFG - Goiânia, Goiás, Brazil; Maria Clorinda Soares Fioravanti, Pós-graduação - UFG - Goiânia, Goiás, Brazil; OLIVARDO FACO, CNPC; Concepta McManus, Universidade Federal do Rio Grande do Sul (UFRGS) - Porto Alegre, RS, Brazil. |
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Título: |
Comparison of selection indexes for dairy goats in the tropics. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Acta Scientiarum. Animal Sciences, Maringá, v. 35, n. 3, p. 321-328, July/Sept. 2013. |
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DOI: |
http://dx.doi.org/10.4025/actascianimsci.v35i3.16049 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The selection process in dairy goat was evaluated by selection indexes. Basal population of 1,000 does, randomly mated by 50 unselected and unrelated bucks, was simulated. Eight selection indexes in two production systems (intensive - indexes I-IV and semi-intensive - indexes V-XIII) were compared. Three groups of dairy goats (A, B and C) were simulated with a respective intensity of 10, 25 and 50%. Each group was composed of five generations and each generation was replicated 20 times. All traits were simulated using matrices of direct additive genetic and the residual (co)variance and the effect of Mendelian segregation. Statistical analyses were performed by repeated measurements in time. Selection using the suggested indexes improved all traits. Selection indexes III and VII are suggested due to simultaneous production and reproduction trait improvement. Indexes IV and VIII are recommended when higher rates of total solids and somatic cell count occur and would correspond to differentiated payment for the milk. [Comparação de índices de seleção de caprinos leiteiros em regiões tropicais]. Resumo: Objetivou-se avaliar o processo de seleção de caprinos leiteiros utilizando-se índices de seleção. Foi simulada população a base composta por 1.000 fêmeas, acasaladas aleatoriamente com 50 reprodutores, não selecionados e não aparentados. Foram comparados oito índices de seleção em cada sistema de criação: intensivo (índices I-IV) e semi-intensivo (índices V-VIII). Foram simulados três grupos de caprinos leiteiros (A, B e C), utilizando-se intensidade de seleção de 10, 25 e 50%, respectivamente. Cada grupo foi composto por cinco gerações e cada geração foi replicada 20 vezes. Todas as características foram simuladas utilizando-se as matrizes de (co) variância genética aditiva direta, residual e o efeito da segregação Mendeliana. As análises estatísticas foram realizadas por meio de medidas repetidas no tempo. A seleção realizada por meio dos índices propostos promoveu melhorias em todas as características. Sugere-se a utilização dos índices III e VII, por promoverem melhorias simultâneas nas características produtivas e reprodutivas. Da mesma forma, sugere-se a utilização dos índices IV e VIII havendo pagamento diferenciado por maiores teores de sólidos totais e à contagem de células somáticas. MenosAbstract: The selection process in dairy goat was evaluated by selection indexes. Basal population of 1,000 does, randomly mated by 50 unselected and unrelated bucks, was simulated. Eight selection indexes in two production systems (intensive - indexes I-IV and semi-intensive - indexes V-XIII) were compared. Three groups of dairy goats (A, B and C) were simulated with a respective intensity of 10, 25 and 50%. Each group was composed of five generations and each generation was replicated 20 times. All traits were simulated using matrices of direct additive genetic and the residual (co)variance and the effect of Mendelian segregation. Statistical analyses were performed by repeated measurements in time. Selection using the suggested indexes improved all traits. Selection indexes III and VII are suggested due to simultaneous production and reproduction trait improvement. Indexes IV and VIII are recommended when higher rates of total solids and somatic cell count occur and would correspond to differentiated payment for the milk. [Comparação de índices de seleção de caprinos leiteiros em regiões tropicais]. Resumo: Objetivou-se avaliar o processo de seleção de caprinos leiteiros utilizando-se índices de seleção. Foi simulada população a base composta por 1.000 fêmeas, acasaladas aleatoriamente com 50 reprodutores, não selecionados e não aparentados. Foram comparados oito índices de seleção em cada sistema de criação: intensivo (índices I-IV) e semi-intensivo (índices V-VIII). For... Mostrar Tudo |
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Palavras-Chave: |
Critério de seleção; Primeiro parto. |
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Thesagro: |
Cabra leiteira; Caprino; Leite; Melhoramento genético animal; Seleção genética. |
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Thesaurus NAL: |
Breeding; dairy goats; Goats; Milk; Selection criteria; total solids. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/97751/1/api-Comparison-of-selection.pdf
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Marc: |
LEADER 03404naa a2200349 a 4500
001 1980515
005 2015-04-13
008 2013 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4025/actascianimsci.v35i3.16049$2DOI
100 1 $aLOPES, F. B.
245 $aComparison of selection indexes for dairy goats in the tropics.$h[electronic resource]
260 $c2013
520 $aAbstract: The selection process in dairy goat was evaluated by selection indexes. Basal population of 1,000 does, randomly mated by 50 unselected and unrelated bucks, was simulated. Eight selection indexes in two production systems (intensive - indexes I-IV and semi-intensive - indexes V-XIII) were compared. Three groups of dairy goats (A, B and C) were simulated with a respective intensity of 10, 25 and 50%. Each group was composed of five generations and each generation was replicated 20 times. All traits were simulated using matrices of direct additive genetic and the residual (co)variance and the effect of Mendelian segregation. Statistical analyses were performed by repeated measurements in time. Selection using the suggested indexes improved all traits. Selection indexes III and VII are suggested due to simultaneous production and reproduction trait improvement. Indexes IV and VIII are recommended when higher rates of total solids and somatic cell count occur and would correspond to differentiated payment for the milk. [Comparação de índices de seleção de caprinos leiteiros em regiões tropicais]. Resumo: Objetivou-se avaliar o processo de seleção de caprinos leiteiros utilizando-se índices de seleção. Foi simulada população a base composta por 1.000 fêmeas, acasaladas aleatoriamente com 50 reprodutores, não selecionados e não aparentados. Foram comparados oito índices de seleção em cada sistema de criação: intensivo (índices I-IV) e semi-intensivo (índices V-VIII). Foram simulados três grupos de caprinos leiteiros (A, B e C), utilizando-se intensidade de seleção de 10, 25 e 50%, respectivamente. Cada grupo foi composto por cinco gerações e cada geração foi replicada 20 vezes. Todas as características foram simuladas utilizando-se as matrizes de (co) variância genética aditiva direta, residual e o efeito da segregação Mendeliana. As análises estatísticas foram realizadas por meio de medidas repetidas no tempo. A seleção realizada por meio dos índices propostos promoveu melhorias em todas as características. Sugere-se a utilização dos índices III e VII, por promoverem melhorias simultâneas nas características produtivas e reprodutivas. Da mesma forma, sugere-se a utilização dos índices IV e VIII havendo pagamento diferenciado por maiores teores de sólidos totais e à contagem de células somáticas.
650 $aBreeding
650 $adairy goats
650 $aGoats
650 $aMilk
650 $aSelection criteria
650 $atotal solids
650 $aCabra leiteira
650 $aCaprino
650 $aLeite
650 $aMelhoramento genético animal
650 $aSeleção genética
653 $aCritério de seleção
653 $aPrimeiro parto
700 1 $aSILVA, M. C. da
700 1 $aMIYAGI, E. S.
700 1 $aFIORAVANTI, M. C. S.
700 1 $aFACO, O.
700 1 $aMcMANUS, C.
773 $tActa Scientiarum. Animal Sciences, Maringá$gv. 35, n. 3, p. 321-328, July/Sept. 2013.
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Embrapa Caprinos e Ovinos (CNPC) |
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